Cholera & Vibrio Master Quiz

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Test your knowledge on cholera, Vibrio, and related infections.

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Quader Ahmed Jalili

India

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Cholera & Vibrio Master Quiz


Froggy Jumps Cholera & Vibrio Master QuizVersión en línea Test your knowledge on cholera, Vibrio, and related infections. por Quader Ahmed Jalili 1 Which toxin mechanism is central to cholera pathogenesis? a Toxin blocks GTP synthesis b CTRH inhibits PKA c Cholera toxin increases cAMP via ADP-ribosylation. 2 Which serogroups are primarily associated with epidemic cholera? a O2 and O5 b O3 and O4 c O1 and O139 3 Which biotype now predominates in most outbreaks? a Matlab b Classical c El Tor 4 What is the infective dose for cholera under normal gastric acidity? a About 10^8 bacilli b About 10^4 bacilli c About 10^2 bacilli 5 Which media is commonly used to culture V. cholerae? a MacConkey agar b TCBS agar c Blood agar 6 Which transport medium is used for vibrios? a MacConkey broth b Selenite F broth c VR medium 7 Which Serogroup does not react with O1/O139 antisera? a Non-O1/O139 Vibrios b O1 serogroup c O139 serogroup 8 Which phage-based typing helps differentiate O1 biotypes? a Karpinski phage typing b Chatterjee phage typing c Basu and Mukherjee phage typing 9 Which virulence factor aids V. cholerae adhesion? a Toxin-coregulated pilus (TCP) b Quorum sensing protein c Capsular capsule 10 Which organism is primarily associated with seafood-related gastroenteritis? a Vibrio vulnificus b Vibrio parahaemolyticus c Aeromonas hydrophila 11 Which infection is a hallmark of V. vulnificus? a Chronic otitis media b Asymptomatic colonization c Primary sepsis in liver disease patients 12 Which vaccine type is currently used for cholera prevention? a Injectable live attenuated only b Oral killed WC or WC/rBS vaccines c Subunit only 13 Which toxin component binds to host cells in cholera toxin? a A subunit b B subunit c Both A and B equally 14 Which feature helps distinguish V. parahaemolyticus on TCBS? a Yellow colonies (sucrose fermenter) b Green colonies (non-sucrose fermenter) c Colorless colonies 15 Which disease is primarily caused by V. cholerae O1/O139? a Chagas disease b Cholera c Typhoid fever 16 Which serotype shift is common in outbreaks? a Inaba to Ogawa shift b Ogawa to Inaba shift c Hikojima to Ogawa shift 17 What is a key feature of El Tor variants? a Only Ogawa serotypes b Purely El Tor with no variants c Properties of classical vibrios within El Tor 18 Which test differentiates classical and El Tor biotypes? a Biotyping (various biochemical tests) b Gram stain color c Catalase test only 19 Which disease is strongly associated with dehydration and rice-water stools? a Cholera b Dysentery c Gonnorhea 20 Which organism is associated with wound infections and septicemia in oysters? a Aeromonas hydrophila b Vibrio vulnificus c Vibrio alginolyticus 21 Which organism is commonly carried asymptomatically and spreads cholera? a El Tor biotype b Classical biotype c Non-O1 strains 22 Primary prevention for cholera relies on which measure? a Safe water and sanitation b Vaccination only c Antibiotics for all 23 Which antimicrobial class is often used for severe V. parahaemolyticus? a Acyclovir b Penicillin c Doxycycline 24 Which organism is known for Kanagawa phenomenon on Wagatsuma agar? a Vibrio parahaemolyticus b Aeromonas c Vibrio cholerae 25 Which ride of vaccines provides protection for 2 years in cholera? a Injectable killed vaccines b Live oral vaccines only c Oral WC vaccines 26 Which organism can cause primary sepsis in liver disease patients? a Vibrio vulnificus b Aeromonas hydrophila c Vibrio parahaemolyticus 27 Which diagnostic method can rapidly identify cholera pathogens? a Blood culture only b Cholera dipstick & multiplex PCR c Gram stain alone 28 Which habitat is typical for vibrios? a Marine salt water b Fresh water only c Soil exclusively 29 Which virulence factor complements TCP in cholera? a Capsular polysaccharide b Zona occludens toxin c Hemolysin only 30 Which organism is often linked to seafood-associated gastroenteritis? a Aeromonas hydrophila b Vibrio parahaemolyticus c Vibrio vulnificus 31 Which test helps identify Vibrio species by salt tolerance? a Salt tolerance test (8% NaCl max) b Oxidase test only c Catalase test only 32 Which vaccine is recommended for travelers to cholera areas? a BCG vaccine b Influenza vaccine c Oral live attenuated Vaxchora (age 18-64) 33 Which toxin component ADP-ribosylates G proteins? a Cholera toxin A subunit b Enterotoxin only c B subunit 34 Which Vibrio species is often halophilic (>6% salt)? a V. vulnificus b V. cholerae c V. parahaemolyticus 35 What is the typical clinical feature of V. vulnificus wound infection? a Painful erythematous swelling b Asymptomatic carrier state c Isolated diarrhea 36 Which cholera serogroup does not cross-protect with the other? a O1 vs O1 b O139 vs O1 c O139 vs O139 37 Which test is used for serogrouping Vibrio cholerae? a Serogrouping (O1 vs O139) b Gram stain c Blood typing 38 What is the Pueblo-like stool description in cholera? a Paste-like stool b Mucopurulent stool c Rice water stool 39 Which organism has a capsulated Bengal strain with O139? a Vibrio parahaemolyticus b Vibrio vulnificus c Vibrio cholerae 40 Which medium yields yellow colonies for V. cholerae? a TCBS agar b Blood agar c MacConkey agar

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Cholera & Vibrio Master QuizVersión en línea

por Quader Ahmed Jalili

Which toxin mechanism is central to cholera pathogenesis?

Which serogroups are primarily associated with epidemic cholera?

Which biotype now predominates in most outbreaks?

What is the infective dose for cholera under normal gastric acidity?

Which media is commonly used to culture V. cholerae?

Which transport medium is used for vibrios?

Which Serogroup does not react with O1/O139 antisera?

Which phage-based typing helps differentiate O1 biotypes?

Which virulence factor aids V. cholerae adhesion?

Which organism is primarily associated with seafood-related gastroenteritis?

Which infection is a hallmark of V. vulnificus?

Which vaccine type is currently used for cholera prevention?

Which toxin component binds to host cells in cholera toxin?

Which feature helps distinguish V. parahaemolyticus on TCBS?

Which disease is primarily caused by V. cholerae O1/O139?

Which serotype shift is common in outbreaks?

What is a key feature of El Tor variants?

Which test differentiates classical and El Tor biotypes?

Which disease is strongly associated with dehydration and rice-water stools?

Which organism is associated with wound infections and septicemia in oysters?

Which organism is commonly carried asymptomatically and spreads cholera?

Primary prevention for cholera relies on which measure?

Which antimicrobial class is often used for severe V. parahaemolyticus?

Which organism is known for Kanagawa phenomenon on Wagatsuma agar?

Which ride of vaccines provides protection for 2 years in cholera?

Which organism can cause primary sepsis in liver disease patients?

Which diagnostic method can rapidly identify cholera pathogens?

Which habitat is typical for vibrios?

Which virulence factor complements TCP in cholera?

Which organism is often linked to seafood-associated gastroenteritis?

Which test helps identify Vibrio species by salt tolerance?

Which vaccine is recommended for travelers to cholera areas?

Which toxin component ADP-ribosylates G proteins?

Which Vibrio species is often halophilic (>6% salt)?

What is the typical clinical feature of V. vulnificus wound infection?

Which cholera serogroup does not cross-protect with the other?

Which test is used for serogrouping Vibrio cholerae?

What is the Pueblo-like stool description in cholera?

Which organism has a capsulated Bengal strain with O139?

Which medium yields yellow colonies for V. cholerae?